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The Drosophila gap gene Krüppel (Kr) encodes a zinc finger-type transcription factor required for controlling the spatial expression of other segmentation genes during early blastoderm stage. Here we show that two independent and transferable repressor domains of Krüppel act to control expression of the pair-rule gene hairy, and that the minimal cis-acting element of hairy stripe7 (h7) mediates either...